An evaluation of intermediate base materials.

The strength of the hydrogen peroxide in the mouthwash can be varied accord­ ing to the severity of the condition. Unfortunately, self-medication with this chemical is common among the laity. The irritant effects of constant use (pro­ duction of gingival and tongue changes), coupled with possible decalcification of tooth structure because of its acidity, render it a dangerous agent in the hands of an individual not under the super­ vision of a dentist.